Fire-arch.



No. 697,658. Patented Apr. |5,- I902.

H. A. POPPENHUSEN.

FIRE ARCH.

(Application filed Dec. 21, 1901.)

nrrnn STATES PATENT Unmet.

HERMAN A. POPPENHUSEN, OF EVANSTON, ILLINOIS.

FIRE-ARCH.

SPECIFICATION forming part of Letters Patent No. 697,658, dated April 15, 1902.

Application filed December 21, 1901. Serial No. 86,792. (No model.)

new and useful Improvements in Fire-Arches; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in fire-arches for furnaces used for boilers, metallurgic and other purposes, and more especially to that class of fire-arches which consist of fire brick or tile supported or suspended from metal beams or girders.

, The invention consists in the matters hereinafter described and pointed out in the appended claims.

In the accompanying drawings, illustrating my invention, Figure l is a view in vertical longitudinal section of the forward part of a boiler-furnace provided with a fire-arch embodying my invention. Fig. 2 is a vertical transverse section taken through the firearch on line 2 2 of Fig. 1. Fig. 3 is a perspective view of one of the fire-brick or tiles of the arch. Fig. 4 is a perspective View of one of the hangers on which the tiles are supported at their forward ends. Fig. 5 is a side elevation of a sectional or made-up tile which may be used in lieu of the tile shown in Fig. 3.

As illustrated in said drawings, A indicates the front wall of a boiler-furnace, B a boiler, herein shown as having the form of a watertube boiler,provided with tubes 1) and a waterhead Z), and 0 indicates a grate, herein shown as having the form of a traveling or chain grate. In the particular instance illustrated the fire-arch is located over the grate and beneath the water-head of the boiler and extends inwardly from the front wall A of the furnace over the forward part of the grate.

The fire-arch consists generally of two transverse girders D E and fire-brick or tiles F of elongated form, which extend from front to rear of the furnace and are arranged side by side across the same and which are supported from the girders D E. The girder D is located adjacent to and over the rear part of the firearch and near the rear ends of the tiles, while .means of a series of metal hangers G, one for each of the tiles. Both girders may be supported at their ends in the side walls of the furnace,though, if desired, the girder E may have the form of a flange formed directly on the horizontal part a of the front wall of the furnace.

Each of the tiles F, as clearly shown in Fig. 3, has in its forward face or end a horizontal groove or notch f and near its rear end a similar groove or notch f At the rear end of the tile the lower portion thereof is extended rearwardly past the notch f to form a projection F. The rearmost girder D is provided with a forwardly-extending bottom flange d and also preferably with an upper forwardly-projectin g flange (1, although the latter flange is merely used for stiffening the girder and is not essential to the arrangement of the parts constituting my invention. The rear end of each tile is supported by engagement of the forwardly-extending lower flange d of the said girder D with the notchf in the rear end of said tile. Each of the hangers G is provided with a rearwardly-bent lower arm g, which is adapted to engage the forward notch f of the tile which it supports. The several hangers G are, moreover, arranged for detachable connection with the girder E, so that said hangers may be separately removed to permit the separate removal of any one of the tiles in case it may become necessary to effect this removal for the purpose of replacing a tile which is burned out or broken. For the purpose of so detachably connecting the hangers with the girder E each hanger is provided on its upper end with a rearwardly-projecting arm g, which is adapted to hook over or engage the forwardly-extending bottom flange E on said girder E, and each hanger is also provided with the upper part of one of the hangers and extends horizontally rearward over the tile mits the hanger to be released from the tierod, and thereby enables it to be freed from its engagement with the girder E and the tile supported thereby. Any other suitable means may be provided in lieu of or in connection with the nuts for fastening the tierods in place.

In order to protect the girder D from the heat of the furnace, the space between the rearward projection F of the tiles and the boiler is filled with tiles I, which are supported by said girder D and said rearward projections of the tiles. As herein shown, said tiles I are provided in their forward faces with forwardly-opening notches 11, which engage a rearwardly-extending ledge d on the rear face of said girder D. Said ledge in the present instance consists of an angle-bar, which is secured to said girder, and preferably the supporting-fiange of saidbar is directed obliquely upwardly, and the notches t" of the tiles are correspondingly formed, so as to afford a more secure attachment of the tiles to said ledge. Between the lower ends of said tiles I and the rearward projections F of the tiles is interposed a mass of filling material I, which is placed in said space while in a plastic condition and thereafter hardens. Theledged supportstheprincipal weight of the tiles, and said filling I prevents said tiles from tilting rearwardly and being disengaged from the supporting-ledge. Said filling also makes it unnecessary that the tiles be made to fit accurately the parts on which they are supported, as if there be any irregularity in the length of the tiles or the shape of the lower ends thereof the filling may be arranged to compensate therefor. The upper ends of the tiles desirably overhang the girder D, and between the boiler and the upper ends of said tiles is interposed a filling I of any suitable material.

When it is desired to replace a tile, the front Wallof the furnace or such part as is necessary is removed to expose the hanger supporting the tile to be replaced, after which the tile is removed by releasing the hanger supporting the same. Thereafter a new tile is inserted into the space from which the old one was removed and the hanger, associated tie-rod, and the front wall of the furnace restored to their original positions.

The space between the front wall of the furnace and the wall I and above the arch within which space the girders D E are located tional tile which may be used in lieu of the tile hereinbefore described. As shown in said figure, the tile J is made of three sectionsa forward section j, a central section j, and arearsectionj? Saidrearsectionisprovided with a projection J, corresponding to the projection F of the tile before described, and the tile J is furthermore provided with forwardly and rearwardly opening notches j j for the reception of the flange and arm of the girder and hanger D and G, respectively. The sections of the tile J are provided in their abutting or contacting faces with registering notches which form, when the sections are assembled, keyways or openings which are occupied by keys J by which the sections are held or locked together when the tile is supported at its ends by the girder and hangers before described. The notchj in the forward end of the tile is made of the same shape as the notches 3' and located the same distance from the top of the tile as said notches j, so that the forward and intermediate sections being otherwise duplicates may be used interchangeably. If desired, thespace between I the front end of the tile and the furnace-wall below the hanger G when said tiles are in place in the furnace may be filled with a suitable filling material to be made of about the same thickness as said hangers. Said tile may be made of two or more than three sections, and when made of more than three sections all the sections'but the rearmost section, as the tile shown is made, maybe made duplicates and interchangeable.

It is obvious that many changes may be made in the structural details of the invention Without departing from the-spirit of the invention, and I do not wish to be limited to such details, except as hereinafter made the subject of specific claims. For instance, the flanges of the girder which directly engages the tiles and the lower arms of-the hangers may be omitted and said girder and hangers fit flat against the ends of the tiles and clamped thereon by the tie-rods. Moreover, the means for holding the hangers and the opposing girder engaged with the tiles may be varied.

I claim as my invention-- 1. A fire-arch comprising a plurality of longitudinally-arranged tiles, transverse supportingirders one of which directly supports one end of each tile and hangers supported by the other girder and which severally support the opposite ends of said tiles.

2. A fire-arch comprising a plurality of Iongitudinally-arranged tiles, transverse supporting-girders one of which directly supports one end of each tile, hangers supported by the other girder and which severally support the opposite ends of said tiles, and means for holding engaged the hangers and girder with the tiles.

3. A fire-arch comprising a plurality of Iongitudinally-arranged tiles, transverse supporting-girders one of which directly supports one end of each tile, hangers supported by the other girder which severally support the opposite ends of said tiles and tie-rods extending between and connecting said tile-engaging girder and hangers.

4. A fire-arch comprising longitudinallyarranged tiles provided at both ends with notches, two transverse supporting-girders, one of which is provided with a flange engaging the notches at one end of the tiles, and hangers connected with the other girder and having horizontal lower arms which engage tlie notches at the other ends of the several ti es.

5. A fire-arch comprising longitudinallyarranged tiles, provided at both ends with notches, two girders provided with bottom flanges which extend in the same direction from the webs thereof, the flange of one of said girders engaging the notches in the ends of the tiles adjacent thereto, and hangers both ends of which have horizontal arms eX- tending in the same direction, and the upper and lower arms of which are engaged with the flange of the other girder and also with the recesses at the other ends of the tiles, and means for holding engaged the hangers and girder with the tiles.

6. A fire-arch comprising longitudinallyarranged tiles, front and rear transverse girders, of which the rear girder engages the rear parts of the tiles, and hangers supported by the front girder and engaging the front parts of the tiles, and a fire-wall supported on the rear girder betweenthe same and the furnace.

7. A fire-arch comprising longitudinallyarranged tiles, front and rear transverse girders, one of which directly supports one end of each tile, hangers supported by the other girder, and severally supporting the opposite ends of said tiles, each of said tiles 'be ing provided at its rear end with a projection extending rearwardly past the rear girderand a fire-wall occupying the space above said projections of the tiles and in rear of the rear girder.

8. A fire-arch comprising longitudinallyarranged tiles, each of which is provided in its forward and rear ends with inwardly-extending notches, and has at its rear end a lower,rearwardly-extendingportion,front and rear transverse girders provided with bottom flanges; the flange of the rear girder being engaged with the notches in the rear ends of the tiles, hangers engaging the flange of the forward girder and engaged at their lower ends with the notches in the forward ends of the tiles, and a fire-wall supported on the rear girder and extending downwardly to the lower rearwardlyprojecting parts of the tiles.

9. A fire-arch comprising longitudinallyarranged tiles, each of which is provided at its forward and rear ends with inwardly-extending notches, front and rear transverse girders provided with bottom flanges, the flange of the rear girder being engaged with the notches in the rear ends of the tiles, hangers engaging the flange of the forward girder and engaged at their lower ends with notches in the forward ends of the tiles, said rear girder being provided with an upwardlyfacing ledge and fire-brick supported on said ledge and engaged with the rear ends of the arch tile.

10. A fire-arch comprising a plurality of longitudinally-arranged tiles which are each transversely divided into a plurality of sections, transverse supporting-girders one of which directly supports one end of each tile, hangers supported by the other girder which severally support the opposite ends of said tiles, and means for holding engaged the hangers and girder with the tiles.

11. A fire-arch comprising a plurality of longitudinally-arranged tiles which are each transversely divided into a plurality of sections, transverse supporting-girders one of which directly supports one end of each tile, hangers supported by the other girder which severally support the opposite ends of said tiles, two or more of said sections of each tile being made duplicates and interchangeable, and means for holding engaged the hangers and girder with the tiles.

12. A fire-arch comprising a plurality of longitudinally-arranged tiles which are each transversely divided into a plurality of sections, transverse supporting-girders, one of which directly supports one end of each tile, hangers supported by the other girder which severally support the opposite ends of said tiles, the abutting ends of said sections being provided with registering notches which form, when the sections are assembled, key-openings, keys in said openings, and means for holding engaged the hangers and girder with the tiles.

In testimony that I claim the foregoing as my invention I affix my signature, in presence of two witnesses, this 19th day of December, A. D. 1901.

HERMAN A. POPPENHUSEN.

NVitnesses:

GERTRUDE J. BRYCE, WILLIAM L. HALL. 

